Multi-class material loading structure for false tooth carving machine and false tooth carving machine

Abstract

The utility model discloses a multi-class material loading structure for a false tooth carving machine and the false tooth carving machine, the loading structure comprises a base, a first jig and a second jig, and the first jig and the second jig are respectively used for fixing false tooth raw materials with different shapes. A mounting hole is formed in the middle of the base, a clamping piece is arranged in the mounting hole, and a clamping groove matched with the clamping piece is formed in one end of the jig. According to the utility model, the jig can be quickly replaced, is suitable for disc-shaped, rod-shaped and other different shapes of denture materials, and improves the applicability. The clamping piece and the clamping groove are matched to achieve stable fixation, additional bolt fastening is not needed, and manual rotating operation is reduced. The jig can be replaced without a complicated tool, and only an old jig needs to be pulled out and a new jig needs to be inserted, so that the operation process is simplified, the inconvenience of repeated disassembly and assembly in a narrow working cavity is avoided, the processing efficiency is improved, and the engraving machine can finish the engraving task of various raw materials more efficiently and stably.

Description

Technical Field

[0001] This utility model relates to the field of dental prosthesis processing technology, and in particular to a multi-category material loading structure for a dental prosthesis carving machine and the dental prosthesis carving machine. Background Technology

[0002] The base plays a crucial role in denture carving. It is not only a core component connecting the jig to the carving machine, but also directly affects the stability and precision of the carving process. Since denture carving typically involves high-speed rotating tools and fine cutting techniques, the base must provide stable support to prevent carving errors caused by vibration or minute displacement during processing. Furthermore, the base needs to be durable enough to withstand the mechanical stress of long-term, high-frequency use, and also possess a certain degree of corrosion resistance to adapt to the processing environment of different denture materials. Therefore, a well-designed base can significantly improve carving accuracy and processing efficiency, ensuring the quality and stability of the final denture product.

[0003] Currently, commercially available machine tool bases are typically made of high-strength metal materials, such as aluminum alloy or stainless steel, and manufactured using high-precision machining processes to ensure sufficient rigidity and wear resistance. The base structure generally includes a locking mechanism for mounting fixtures and a fixed interface for docking with the machine tool.

[0004] For example, the utility model patent with authorization announcement number CN211934378U discloses an adjustable dental prosthesis carving machine clamp, such as Figure 1 As shown, the fixture includes a fixed ring 10, a rotating ring 20, a base 30, and multiple replaceable covers 40. This dental prosthesis engraving machine fixture is designed to utilize the different sizes of the second limiting parts of the different covers, allowing workers to adapt to different sizes of ceramic discs simply by changing the covers, without needing to replace the entire fixture, thereby improving the working efficiency of the dental prosthesis engraving machine.

[0005] However, the dental prosthesis carving machine fixture disclosed in CN211934378U requires workers to repeatedly rotate bolts to install and remove the blank when fixing it, which is cumbersome, time-consuming, and labor-intensive. Therefore, utility model patent CN219902836U discloses a material carrier for a dental prosthesis carving machine to solve this problem, such as... Figure 2 As shown, the clamping mechanism 3 includes a fixing block 31 fixedly connected to the surface of the fixing seat 1 on the side close to the denture carving machine body 2, an arc-shaped block 38 fixedly connected to the end of the fixing block 31 away from the fixing seat 1, and clamping blocks 37 symmetrically hinged to both ends of the arc-shaped block 38 via a hinge axis. A micro motor 32 is installed inside the fixing block 31.

[0006] The description in paragraph

[0037] of the CN219902836U specification states: "When it is necessary to carve the blank material by the dental prosthesis carving machine, first place the blank material on the arc surface of the arc block 38, then start the micro motor 32 to drive the screw 34 to rotate. The rotation of the screw 34 will drive the moving block 35 to slide inside the moving groove 33. Then, through the two sets of connecting rods 36, drive the two sets of clamping blocks 37 to rotate along the hinge axis, so that the two sets of anti-slip rubber blocks 39 are close to the blank material. The blank material is clamped and fixed by the two sets of clamping blocks 37. Then, the blank material can be carved by the dental prosthesis carving machine body 2. After the carving is completed, start the micro motor 32 to drive the screw 34 to reverse, which will drive the moving block 35 to move in the opposite direction. Through the connecting rod 36, pull the clamping block 37 to release the clamping block 37 from the limit of the carved disc ceramic. The carved blank material can be removed. The blank material can be quickly fixed and disassembled without manually turning the bolts. The operation is simple and convenient, which improves the working efficiency of the dental prosthesis carving machine."

[0007] As can be seen from the above, the fixture disclosed in CN219902836U is much easier to operate than that in CN211934378U. However, firstly, this fixture is only applicable to disc ceramics or zirconium oxide, and is not suitable for raw materials with different shapes such as titanium pillars / ceramic pillars; secondly, this fixture requires workers to disassemble and install raw materials in a confined working chamber, resulting in lower ease of operation and work efficiency.

[0008] This shows that the existing technology still needs to be improved and perfected. Summary of the Invention

[0009] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a multi-category material loading structure for a dental prosthesis carving machine and a dental prosthesis carving machine, which aims to solve the problems that the existing material loading structure can only be used for raw materials of a single shape, and that the raw materials need to be disassembled and installed in a small working cavity, resulting in low operation convenience and low work efficiency.

[0010] The technical solution of this utility model is as follows:

[0011] A multi-category material loading structure for a dental prosthesis carving machine includes: a base, a first fixture, and a second fixture. The first fixture and the second fixture are used to fix dental prosthesis raw materials of different shapes and are replaceably connected to the base. The base has a mounting hole in the middle, and a retaining member is provided in the mounting hole. The first fixture and the second fixture are connected to the base, and each end of the base has a retaining groove adapted to the retaining member.

[0012] The advantages of the above solution are as follows: This utility model, through the mounting hole in the middle of the base and the retaining member therein, allows for easy replacement of the first and second fixtures, making it suitable for different shapes of denture raw materials. When different shapes of materials need to be carved, simply select the corresponding fixture and install it on the base. The retaining member engages with the retaining groove on the fixture to achieve a stable fixation, avoiding the problem that traditional clamping structures can only adapt to a single shape of raw material. This allows both disc-shaped and rod-shaped materials to be adapted, improving applicability. In addition, the design of the retaining member eliminates the need for complex tools during fixture replacement. Simply remove the old fixture that has been processed and insert the new fixture, avoiding the inconvenience of repeated installation and disassembly in a confined working cavity, thus improving operational efficiency. At the same time, since the base is fixed without the need for additional bolts, the operation time caused by manually rotating bolts is reduced, improving the continuity of the processing rhythm, and enabling the carving machine to complete carving tasks for different raw materials more efficiently. Therefore, this invention not only expands the application scope of the dental prosthesis carving machine, but also optimizes the convenience of fixture replacement, ultimately improving the overall processing efficiency and production stability.

[0013] In a further preferred embodiment, the bottom of the mounting hole extends into an annular mounting groove, the retaining element is a ball bearing, and multiple balls bearings are provided, with the multiple balls bearings disposed within the annular mounting groove; and a control mechanism is provided on the side of the annular mounting groove to control the balls bearings to converge toward the center of the mounting hole.

[0014] The advantages of the above solution are as follows: This utility model extends an annular mounting groove at the bottom of the mounting hole and arranges multiple rolling balls within it, enabling the clamping structure to provide a more stable fixing effect. The rolling balls are evenly distributed within the annular mounting groove, and their convergence towards the center of the mounting hole is adjusted by a control mechanism, thereby enhancing the clamping force on the first and second fixtures. When the fixture is inserted into the mounting hole, the rolling balls automatically retract under the action of the control mechanism and adhere tightly to the wall of the clamping groove, allowing the fixture to be quickly fixed and kept stable, avoiding a decrease in carving accuracy due to loosening or displacement. At the same time, the rolling characteristics of the rolling balls reduce the frictional resistance during fixture insertion and removal, making fixture replacement smoother and reducing the jamming problems that may be caused by traditional rigid snap-fit ​​structures. In addition, the control mechanism can be finely adjusted according to the size or shape of the fixture, allowing this loading structure to adapt to a wider range of denture material specifications, further improving applicability. During the overall operation, the user only needs to simply push the fixture to complete the fixing or disassembly without the need for additional tools, which not only simplifies the replacement process but also avoids the inconvenience of repeated operations in a confined working cavity, significantly improving work efficiency. Therefore, by combining the rolling ball and the control mechanism, this utility model optimizes the fixture replacement method while ensuring the stability of the loading structure, enabling the engraving machine to adapt to different raw materials more efficiently and flexibly, and ultimately improving the overall processing efficiency and production stability.

[0015] In a further preferred embodiment, the control mechanism includes a thrust block, the upper end of which is trapezoidal and the side inclined surface is used to face the rolling ball; in the diffused state, the rolling ball is in contact with the side inclined surface; in the installed and retracted state, the rolling ball is in contact with the side plane of the thrust block, the wall of the annular positioning groove and the wall of the retaining groove, forming a three-point positioning.

[0016] The advantages of the above solution are as follows: Based on the aforementioned ball bearing holding structure, this invention introduces a thrust block into the control mechanism and utilizes its trapezoidal upper end and side inclined surface to allow the ball bearing to smoothly switch between the spreading and contracting states. When the fixture is not inserted, the ball bearing is in the spreading state, adhering to the side inclined surface of the thrust block, keeping the mounting hole relatively open for easy fixture insertion. When the fixture is inserted and a certain pressure is applied downwards, the ball bearing gradually contracts towards the center of the mounting hole under the action of the thrust block, eventually adhering to the side plane of the thrust block, the wall of the annular mounting groove, and the wall of the holding groove on the fixture, forming a three-point positioning structure. This positioning method ensures that the fixture can be stably fixed after installation without shaking, while avoiding the offset or loosening problems that are easily caused by single-point or double-point support. Furthermore, the inclined side surface of the thrust block provides support as the ball bearings spread, allowing the fixture to be removed without additional force. Only the slight resistance of the ball bearings is needed for smooth removal, preventing disassembly difficulties caused by excessive clamping and improving the smoothness of fixture replacement. Overall, this structure not only maintains the stability of the fixture but also optimizes the replacement process, making fixture insertion and removal more convenient. It reduces the cumbersome operations for operators in confined working chambers, further enhancing the applicability, ease of operation, and production efficiency of the engraving machine.

[0017] In a further preferred embodiment, a thrust spring is provided below the thrust block. The thrust spring is used to contract under force when the first or second fixture is inserted into the mounting hole, causing the thrust block to move downward, and to reset and cause the thrust block to rise after the rolling ball enters the retaining groove.

[0018] The advantages of the above solution are as follows: By setting a thrust spring below the thrust block, this utility model enables the thrust block to have elastic mobility, thereby optimizing the installation and disassembly process of the fixture. When the fixture is not inserted, the thrust spring is in its initial state, the thrust block is located above, and the rolling ball remains in a retracted state (non-installation retracted), conforming to the side plane of the thrust block. When the fixture is inserted into the mounting hole, the end of the fixture first contacts the rolling ball and applies downward pressure, causing the rolling ball to be squeezed outward and simultaneously pushing the thrust block downward. The thrust spring is compressed, providing sufficient movement space for the rolling ball and ensuring that the fixture can be smoothly inserted. As the fixture continues to move downward to the target position, the rolling ball gradually enters the retaining groove of the fixture. At this time, the rolling ball is constrained by its own structure and retracts inward, returning to the retracted state. The pressure of the thrust spring is released, pushing the thrust block upward to return to its original position, so that the rolling ball re-conforms to the side plane of the thrust block, forming a stable three-point positioning in the installation retracted state, thereby ensuring that the fixture is firmly locked and not easily loosened or offset. This structure also functions during fixture removal. With appropriate upward pulling force, the fixture's retaining groove causes the rolling balls to spread outwards, while the thrust block moves downwards under the force of the rolling balls, gradually releasing the fixture until it is successfully removed. Overall, this design not only ensures the fixture's stability but also, through the elastic restoring characteristics of the thrust spring, makes the fixture insertion and removal process smoother, avoiding the cumbersome operation of traditional bolt fixing methods. This improves the applicability, ease of operation, and production efficiency of the engraving machine.

[0019] In a further preferred embodiment, both the first fixture and the second fixture include a universal connecting component, which includes a connector and a retaining ring sleeve. The lower end of the connector is provided with an inverted conical insertion portion, and the retaining ring sleeve is sleeved on the outer edge of the connector. The retaining groove is formed on the outer edge of the middle part of the retaining ring sleeve.

[0020] The advantages of the above solution are as follows: The universal connecting assembly consists of a connecting member and a retaining ring sleeve. The lower end of the connecting member adopts an inverted conical insertion part, which allows the fixture to be gradually aligned along the guide when inserted into the mounting hole, reducing jamming caused by angular deviation and improving installation accuracy. The retaining ring sleeve is fitted around the outer edge of the connecting member, and a retaining groove is opened on its outer edge in the middle, allowing the rolling ball to accurately embed into the retaining groove when the fixture is inserted to the appropriate depth, achieving a stable lock. In addition, the design of the inverted conical insertion part applies axial pressure to the rolling ball when the fixture is inserted, causing the force on the rolling ball to spread, thereby gradually pushing the thrust block and thrust spring downward, ensuring that the fixture can be inserted smoothly. When the rolling ball enters the retaining groove, the rolling ball returns to its closed state, the thrust spring resets, and the thrust block moves upward, further locking the fixture and ensuring its stability and preventing wobbling during operation. When disassembling the fixture, simply lift the fixture upwards along the axis. The inverted conical insertion part causes the rolling ball to slide along the outer edge of the retaining ring and spread outwards, thereby releasing the lock and allowing the fixture to be pulled out smoothly.

[0021] In a further preferred embodiment, the lower end of the retaining ring is conical and the upper end is inverted conical, and the retaining groove is located between the conical body and the inverted conical body.

[0022] The above solution achieves the following effect: When the fixture is inserted, the conical lower end of the retaining ring first contacts the rolling ball. Under axial pressure, the rolling ball gradually spreads along the inclined surface, causing the thrust block to move downwards and allowing the rolling ball to make way, ensuring smooth insertion of the fixture. When the fixture continues to press down to the predetermined position, the rolling ball enters the retaining groove. Because the retaining groove is located between the conical body and the inverted conical body, its gradual shape design on both sides provides good limiting guidance when the rolling ball retracts, allowing the rolling ball to accurately embed into the retaining groove and achieve stable locking. At the same time, the thrust spring resets after the rolling ball retracts, causing the thrust block to move upwards, further preventing the fixture from loosening or shaking during operation and ensuring engraving accuracy.

[0023] Furthermore, the inverted conical upper end design primarily considers the characteristics of denture processing: in actual operation, manual installation and removal of fixtures is difficult to guarantee absolute precision. The inverted conical structure can automatically guide and align the fixture during insertion or removal, preventing collisions between the fixture and the base due to operational deviations and reducing the risk of damage caused by assembly errors. During processing, the cutting force on the denture material mainly acts perpendicularly to the mounting hole and does not produce additional axial displacement on the fixture along the axis. Therefore, even with the inverted conical design at the upper end, the stability of the fixture is not affected. This structural optimization makes the fixture installation and removal smoother, while ensuring stability during processing, improving overall operational convenience and equipment durability, and ultimately enhancing the applicability and production efficiency of the engraving machine.

[0024] In a further preferred embodiment, the upper end of the connector is provided with a connecting thread, and is connected to the fixture through the connecting thread.

[0025] The advantages of the above solution are as follows: Compared to a one-piece fixture structure, the threaded connection method allows the same type of connector to be used with fixtures of different specifications. Only the fixture portion needs to be replaced to accommodate different shapes or sizes of denture raw materials, thus reducing the need for multiple connector specifications and improving the versatility of the components. Furthermore, using connectors of the same specification means that only a single mold needs to be created during manufacturing, avoiding the development costs of multiple molds due to fixture diversification, effectively reducing mold-making costs, simplifying the production process, and improving production efficiency. In terms of equipment maintenance, because the connectors are standardized, if damage or wear occurs, only the damaged part needs to be replaced, rather than the entire fixture assembly, reducing maintenance costs and downtime caused by equipment repairs. In addition, the threaded connection makes fixture installation and replacement more convenient; operators can quickly disassemble and assemble without special tools, improving the continuity of the production rhythm and optimizing the user experience of the equipment.

[0026] In a further preferred embodiment, the first fixture has a semi-circular mounting groove in the middle and semi-circular fastening discs on both sides, the semi-circular fastening discs being used to lock the round denture material placed in the semi-circular mounting groove.

[0027] The advantages of the above solution are as follows: Compared to direct clamping, this structure utilizes the clamping force of a semi-circular fastening plate to achieve a stable fixation of the circular material, avoiding material displacement or loosening caused by uneven clamping force, and improving processing accuracy. Furthermore, the semi-circular mounting groove design ensures more precise placement of the dental prosthesis material, reducing positioning errors during installation, while also avoiding excessive pressure on the material surface, lowering the risk of material damage during processing. Therefore, this design not only improves the fixation stability of the circular dental prosthesis material but also enhances the accuracy and reliability of the engraving machine processing.

[0028] In a further preferred embodiment, the second fixture has a plurality of insertion holes on the side opposite to the base, the insertion holes being used to install non-disc-shaped denture raw materials.

[0029] The advantages of the above solution are as follows: the insertion hole design allows materials (such as titanium pillars and ceramic pillars) to be directly inserted into the fixture without the need for additional clamping mechanisms, simplifying the loading process, reducing the complexity of manual adjustments, and improving operational efficiency. Furthermore, because the layout of the insertion holes can be optimized according to the shape of the denture raw material, the material can be more securely fixed to the fixture, thus avoiding displacement caused by vibration or uneven stress and improving processing accuracy. Therefore, this design not only expands the applicability of the engraving machine to denture raw materials of different shapes but also optimizes the loading and fixing methods, enhancing the overall convenience and stability of processing.

[0030] A dental prosthesis carving machine includes the multi-category material loading structure described above. Since the dental prosthesis carving machine incorporates all the technical features of the aforementioned multi-category material loading structure, it also possesses all the technical effects of the aforementioned multi-category material loading structure, which will not be elaborated further.

[0031] Compared with existing technologies, this utility model provides a multi-category material loading structure for a dental prosthesis carving machine, including a base, a first fixture, and a second fixture. The first and second fixtures are interchangeably connected to the base and are used to fix dental prosthesis raw materials of different shapes. The base has a mounting hole in the middle, with a retaining element inside. The end of the fixture that connects to the base has a retaining groove that mates with the retaining element. This utility model allows for quick fixture replacement and is suitable for dental prosthesis materials of different shapes, such as discs and rods, improving applicability. The retaining element and retaining groove provide a stable fixation without the need for additional bolts, reducing manual rotation operations, improving the continuity of processing rhythm, and avoiding the limitations of traditional clamping structures. Fixture replacement requires no complex tools; simply remove the old fixture and insert the new one, simplifying the operation process, avoiding the inconvenience of repeated disassembly and assembly in a confined working cavity, improving processing efficiency, and enabling the carving machine to complete carving tasks for various raw materials more efficiently and stably. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the dust removal device of the dental prosthesis carving machine disclosed in CN5656804U.

[0033] Figure 2 This is a schematic diagram of the automatic chip removal mechanism of the dental prosthesis carving machine disclosed in CN0261551U.

[0034] Figure 3 This is a schematic diagram showing the first fixture connected to the base in the multi-category material loading structure of the dental prosthesis carving machine of this utility model.

[0035] Figure 4 This is a schematic diagram showing the state of one of the second fixtures in the multi-category material loading structure of the present invention connected to the base.

[0036] Figure 5 This is a schematic diagram showing the state of the second fixture connected to the base in the multi-category material loading structure of the dental prosthesis carving machine of this utility model.

[0037] Figure 6 This is an exploded view of the multi-category material loading structure for a dental prosthesis carving machine according to this utility model.

[0038] Figure 7 This is a cross-sectional view of the multi-category material loading structure for a dental prosthesis carving machine according to this utility model. Detailed Implementation

[0039] This utility model provides a multi-category material loading structure for a dental prosthesis carving machine and a dental prosthesis carving machine. To make the purpose, technical solution and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and examples.

[0040] This utility model provides a multi-category material loading structure for a dental prosthesis carving machine, such as Figures 3 to 5 As shown, it includes a base 300, a first fixture 100, and a second fixture (210, 220); wherein, the first fixture 100 and the second fixture (210, 220) are used to fix denture raw materials of different shapes (such as... Figure 3 Zirconia YHG in Figure 4 Titanium pillar TZ and Figure 5 The ceramic column (TCZ) in the middle can be connected to the base 300 in a replaceable manner.

[0041] like Figure 6 As shown, in this embodiment, a mounting hole 310 is provided in the middle of the base 300, and a retaining member 320 (such as...) is provided in the mounting hole 310. Figure 7 (As shown). Both the first fixture 100 and the second fixture (210, 220) have a retaining groove 131 at one end for connecting the base 300, which is adapted to the retaining member 320, as shown. Figure 6 As shown. Through this structure, the first fixture 100 and the second fixture (210, 220) can be stably connected by the retaining member 320, and can also be quickly disassembled and replaced.

[0042] During use, when different shapes of denture raw materials need to be carved, the operator can select the corresponding fixture according to specific needs and install it into the base 300. During installation, the retaining member 320 cooperates with the retaining groove 131 on the fixture to achieve a stable fixation, ensuring that the fixture will not loosen or shift during the carving process. This structure effectively solves the problem that traditional clamping methods can only adapt to raw materials of a single shape, allowing both disc-shaped and rod-shaped materials to be stably fixed, thus improving the applicability of the equipment.

[0043] Furthermore, in this embodiment, the design of the retaining component 320 eliminates the need for complex tools during fixture replacement. Simply remove the finished fixture and insert the new one to complete the replacement, avoiding the cumbersome disassembly and assembly operations caused by bolt tightening in traditional solutions. This is particularly suitable for operations within confined working chambers, further improving ease of use and work efficiency. Simultaneously, because this solution uses a retaining method to fix the fixture, rather than the traditional bolt tightening method, it reduces the extra operation time caused by manually rotating bolts, thereby improving the continuity of the processing rhythm and enabling the engraving machine to complete engraving tasks on different raw materials more efficiently.

[0044] In practical implementation, the matching design of the retaining member 320 and the retaining groove 131 can adopt various forms to meet the fixing requirements of different fixtures. For example, the retaining member 320 can adopt an elastic ball retaining structure, and the retaining groove 131 can be correspondingly designed as an annular groove, so that when the fixture is inserted into the base 300, the rolling ball is squeezed and diffuses outward, and automatically returns to its original position after being positioned in the retaining groove 131, achieving stable locking. In addition, the retaining member 320 can also adopt a spring clip snap-on structure, and the retaining groove 131 can be correspondingly designed as a stepped groove. After the fixture is inserted, the spring clip snaps into the stepped part, providing additional anti-pull-out capability. Another method is to use a conical retaining structure, in which the retaining member 320 is designed as an inner conical structure, and the retaining groove 131 is designed as an outer conical groove. After the fixture is inserted, friction self-locking is formed by the taper matching, improving stability. Alternatively, a rotary locking structure can be used, in which the retaining member 320 includes a rotary positioning pin, and the retaining groove 131 is designed as a locking hole with a radial channel. After the fixture is inserted, the latch is locked by rotating it at a certain angle. Those skilled in the art can choose any of the above-mentioned retaining structures without creative effort, and can also make adaptive adjustments to any of the above structures. This utility model does not impose any specific limitations.

[0045] In a further preferred embodiment, the bottom of the mounting hole 310 extends circumferentially to form an annular mounting groove, and multiple rolling balls are arranged in the annular mounting groove as retaining elements 320. The rolling balls are evenly distributed in the groove, and their movement is adjusted by a control mechanism located on the side wall of the annular mounting groove to adapt to the fixing requirements of different fixtures. When the fixture is inserted into the mounting hole 310, the rolling balls temporarily spread outward under the action of external force to ensure that the fixture smoothly enters the retaining position. Then, under the action of the control mechanism, they return to their original position and stick tightly to the wall of the retaining groove 131 to achieve stable fixation and prevent the fixture from shifting due to vibration or external force during processing, thereby ensuring the stability of engraving accuracy. The rolling characteristics of the rolling balls significantly reduce the frictional resistance when the fixture is inserted and removed, making the replacement process smoother and avoiding the jamming problem that may be caused by traditional rigid snap-fit ​​structures. This setting not only optimizes the loading process, making the installation and removal of fixtures more convenient without the need for additional tools, but also reduces the difficulty for operators to make tedious adjustments in a confined workspace, improving the operating efficiency of the equipment. In addition, the even distribution of the rolling balls helps to balance the force on the fixture, further enhancing the reliability of the fixation and avoiding the impact of uneven force on a single point on the carving effect.

[0046] Furthermore, the control mechanism includes a thrust block to optimize the movement trajectory of the ball bearings during fixture installation and removal. The upper end of the thrust block is trapezoidal, with its inclined side facing the ball bearings, allowing for a smooth transition between the ball bearings' spreading and contracting states. When the fixture is not inserted, the ball bearings remain in a spreading state under the force of their own force and the inclined surface of the thrust block, adhering to the inclined surface and maintaining a large opening in the mounting hole 310 for easy fixture insertion. As the fixture is pushed downwards, the ball bearings slide along the inclined surface under force and gradually converge towards the center of the mounting hole 310, eventually stabilizing on the side plane of the thrust block, the wall of the annular mounting groove, and the wall of the retaining groove 131 on the fixture, achieving three-point positioning support. When the fixture is removed, the ball bearings, guided by the inclined surface of the thrust block, spread outwards again, reducing disassembly resistance and allowing the fixture to be removed smoothly without causing replacement difficulties due to excessive clamping. Overall, the design balances the stability of the loading structure with the ease of fixture replacement, simplifies the operation steps, avoids the inconvenience of disassembly caused by excessive clamping force in traditional rigid clips, improves the equipment's ability to adapt to different specifications of denture raw materials, and enables the engraving machine to switch fixtures more efficiently during the production process, thereby improving the continuity of processing and overall production efficiency.

[0047] In specific implementation, the thrust block can be controlled by active driving force, such as pneumatic drive and cylinder drive; it can also be controlled by passive driving force, such as compression spring; or it can be controlled by a combination of active and passive driving forces. This utility model does not make specific limitations in this regard.

[0048] Preferably, a thrust spring is provided below the thrust block to enable elastic adjustment of the thrust block during fixture installation and removal. When the thrust spring is in its initial state, the thrust block remains in the upper position, and the rolling balls adhere to the side surface of the thrust block, maintaining the preset installation state. When the fixture is inserted into the mounting hole 310, its bottom first contacts the rolling balls and applies downward pressure, causing the rolling balls to spread under the external force. Simultaneously, this causes the thrust block to move downward, compressing the thrust spring and providing sufficient space for the rolling balls to move, ensuring the fixture can be smoothly inserted to the specified depth.

[0049] As the fixture continues to move down to the target position, the ball bearings gradually enter the retaining groove 131 of the fixture. Due to the shape and space of the retaining groove 131, the ball bearings automatically return to their retracted state. At this time, the compression force of the thrust spring is gradually released, pushing the thrust block upward to return to its original position, so that the ball bearings re-adhere to the side plane of the thrust block, forming a three-point positioning, thereby ensuring that the fixture is firmly fixed and does not loosen or shift.

[0050] During fixture disassembly, only an appropriate pulling force needs to be applied. The fixture's retaining groove 131 causes the rolling balls to spread outward, while the thrust block moves downward under the thrust of the rolling balls, gradually releasing the fixture until it is successfully pulled out. The elastic restoring characteristic of the thrust spring causes the thrust block to quickly return to its initial position, restoring it to the installation state. This reduces the resistance during fixture replacement and avoids the disassembly difficulties caused by excessive friction in traditional rigid clip or bolt fixing methods.

[0051] Preferably, in this embodiment, both the first fixture 100 and the second fixture (210, 220) employ universal connecting components to facilitate quick replacement and stable fixation of different fixtures. The universal connecting components include a connector 120 and a retaining ring sleeve 130, such as... Figure 6 As shown, the lower end of the connector 120 is designed as an inverted conical insertion part, which can guide the fixture when it is inserted into the mounting hole 310, so that the fixture is gradually aligned along the axial direction, reducing jamming caused by angular errors and improving the accuracy and smoothness of installation. The retaining ring 130 is sleeved on the outer edge of the connector 120, and a retaining groove 131 is provided on its outer edge in the middle, so that the rolling ball can be accurately embedded when the fixture is inserted into the predetermined position, achieving a stable lock.

[0052] When the fixture is aligned with the mounting hole 310 and pushed downwards, the inverted conical insertion part first contacts the rolling ball and gradually applies axial pressure, causing the rolling ball to spread outwards along the annular mounting groove. This pushes the thrust block and thrust spring downwards, providing ample space for further insertion of the fixture. As the fixture continues to press down, the rolling ball eventually enters the retaining groove 131. At this point, the rolling ball is constrained by the shape and space of the retaining groove 131 and returns to its closed state. The elastic force of the thrust spring pushes the thrust block upwards, making the rolling ball fit more tightly against the outer edge of the retaining groove 131, thereby enhancing the locking effect and ensuring that the fixture remains stable during equipment operation, without loosening or displacement.

[0053] During fixture disassembly, simply lift the fixture axially. The inverted conical insertion part of the connector 120 will cause the rolling balls to slide along the outer edge of the retaining ring sleeve 130, allowing the rolling balls to spread outward and thus releasing the fixture from locking. At this time, the thrust block moves downward under force, the thrust spring is compressed, and the rolling balls gradually exit the retaining groove 131, allowing the fixture to be smoothly pulled out. The entire process requires no additional tools, and fixture replacement is simple and quick. It is suitable for various specifications of denture processing materials, effectively improving production efficiency and reducing the jamming and disassembly difficulties that may be caused by traditional rigid snap-fit ​​structures.

[0054] In this embodiment, the lower end of the retaining ring sleeve 130 is designed to be conical, and the upper end is designed to be inverted conical. A retaining groove 131 is provided between the conical body and the inverted conical body to optimize the insertion and removal process of the fixture and improve the stability of the installation. When the fixture is inserted, the conical lower end of the retaining ring sleeve 130 first contacts the rolling ball. Under the action of axial pressure, the rolling ball gradually spreads along the conical surface, causing the thrust block to move down, thereby providing sufficient space to ensure smooth insertion of the fixture. When the fixture continues to press down to the predetermined position, the rolling ball enters the retaining groove 131. Since the retaining groove 131 is located between the conical body and the inverted conical body, the gradient structure on both sides provides good limiting guidance when the rolling ball returns to the retracted state, so that the rolling ball is accurately embedded in the retaining groove 131, forming a stable locking effect. At the same time, the thrust spring resets after the rolling ball retracts, causing the thrust block to move up, further preventing the fixture from loosening or shaking during operation and ensuring the engraving accuracy.

[0055] The inverted conical upper end design is optimized for the characteristics of manual operation during denture processing. When inserting or removing the fixture, the inverted conical structure acts as an automatic guide and aligner, preventing collisions between the fixture and the base 300 due to improper operation, thus reducing the impact of assembly errors on the equipment. Furthermore, during processing, the cutting force on the denture material mainly acts vertically on the mounting hole 310 and does not significantly affect the fixture axially. Therefore, even with the inverted conical structure at the upper end of the retaining ring 130, the overall stability of the fixture is not affected. This design not only optimizes the installation and removal process of the fixture but also improves the stability during processing, reduces the risk of damage caused by assembly errors or improper human operation, and ultimately enhances the durability and production efficiency of the equipment.

[0056] Furthermore, to enhance the versatility of the fixture assembly, the upper end of the connector 120 is provided with a connecting thread, such as... Figure 6As shown, it is connected to the fixture via the thread. Compared to a one-piece fixture structure, the threaded connection allows the same model of connector 120 to be adapted to different specifications of fixtures. Only the fixture part needs to be replaced to accommodate denture raw materials of different shapes or sizes, thereby reducing the need for multiple specifications of connector 120 and improving component compatibility. In the manufacturing process, using the same specification of connector 120 means that only a single specification mold needs to be made to meet the requirements, avoiding the increased mold development costs due to fixture diversification, thus effectively reducing production costs and simplifying the production process. In addition, the standardized connector 120 design facilitates equipment maintenance and management. Once damaged or worn, only the damaged part needs to be replaced, instead of replacing the entire fixture assembly, reducing maintenance costs and downtime caused by equipment repairs. At the same time, the threaded connection makes the installation and replacement of fixtures more convenient. Operators can quickly complete disassembly and assembly without the need for special tools, improving the continuity of the production rhythm.

[0057] According to another aspect of this utility model, the first fixture 100 has a semi-circular mounting groove in the middle and semi-circular fastening plates on both sides thereon to securely fix the circular denture material; the lower end has a threaded hole for connecting the connector 120. The semi-circular fastening plates are used to lock the circular material placed in the semi-circular mounting groove. Compared with the traditional direct clamping and fixing method, this structure uses the clamping force of the semi-circular fastening plates to act evenly on the material surface, thereby effectively avoiding material displacement or loosening caused by uneven clamping force, and improving processing accuracy. In addition, the design of the semi-circular mounting groove ensures that the denture material can be accurately placed, reducing positioning errors during installation, while avoiding excessive pressure on the material surface, reducing the risk of material damage during processing. For fixing non-disc-shaped denture materials, the second fixture (210, 220) has multiple insertion holes on the side opposite to the base 300 for directly installing non-disc-shaped denture materials, such as titanium pillars or ceramic pillars; similarly, the lower end has a threaded hole for connecting the connector 120. The insertion hole design allows materials to be directly inserted into the fixture without the need for additional clamping mechanisms, thus simplifying the loading process, reducing the complexity of manual adjustments, and improving operational efficiency. Furthermore, the layout of the insertion holes can be optimized according to the shape of the denture raw material, enabling the material to be more securely fixed to the fixture, thereby preventing displacement due to vibration or uneven stress and improving processing accuracy. This design not only expands the applicability of the engraving machine to denture raw materials of different shapes but also optimizes the loading and fixing method, improving the overall convenience and stability of processing.

[0058] This utility model also provides a dental prosthesis carving machine, which includes the multi-category material loading structure for dental prosthesis carving machines described above. Since the dental prosthesis carving machine includes all the technical features of the aforementioned multi-category material loading structure for dental prosthesis carving machines, it also possesses all the technical effects of the aforementioned multi-category material loading structure for dental prosthesis carving machines, and will not be elaborated further.

[0059] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are meant to be within the scope of this invention and form different embodiments; for example, any one of the claimed embodiments can be used in any combination.

[0060] It should be noted that the above embodiments are illustrative of the present invention and not restrictive of it, and those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims listing several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names. The steps in the above embodiments, unless otherwise specified, should not be construed as limiting the order of execution.

Claims

1. A multi-category material loading structure for a dental prosthesis carving machine, characterized in that, include: The base, the first fixture, and the second fixture are used to fix denture materials of different shapes and are interchangeably connected to the base. The base has a mounting hole in the middle and a retaining member is provided in the mounting hole. The first fixture and the second fixture are used to connect to the base, and each end of the base has a retaining groove that is adapted to the retaining member.

2. The multi-category material loading structure for a dental prosthesis carving machine according to claim 1, characterized in that, The bottom of the mounting hole extends into an annular mounting groove, and the retaining element is a ball bearing. Multiple balls bearings are provided and are disposed within the annular mounting groove. A control mechanism is provided on the side of the annular mounting groove to control the balls bearings to converge toward the center of the mounting hole.

3. The multi-category material loading structure for a dental prosthesis carving machine according to claim 2, characterized in that, The control mechanism includes a thrust block, the upper end of which is trapezoidal and the side inclined surface is used to face the rolling ball; in the diffused state, the rolling ball is attached to the side inclined surface; in the installed and retracted state, the rolling ball is attached to the side plane of the thrust block, the wall of the annular positioning groove and the wall of the retaining groove, forming a three-point positioning.

4. The multi-category material loading structure for a dental prosthesis carving machine according to claim 3, characterized in that, A thrust spring is provided below the thrust block. The thrust spring is used to contract under force when the first fixture or the second fixture is inserted into the mounting hole, so that the thrust block moves down, and resets to make the thrust block rise after the rolling ball enters the retaining groove.

5. The multi-category material loading structure for a dental prosthesis carving machine according to claim 4, characterized in that, Both the first fixture and the second fixture include a universal connecting component. The universal connecting component includes a connector and a retaining ring sleeve. The lower end of the connector is provided with an inverted conical insertion part. The retaining ring sleeve is sleeved on the outer edge of the connector. The retaining groove is formed on the outer edge of the middle part of the retaining ring sleeve.

6. The multi-category material loading structure for a dental prosthesis carving machine according to claim 5, characterized in that, The lower end of the retaining ring is conical, and the upper end is inverted conical. The retaining groove is located between the conical body and the inverted conical body.

7. The multi-category material loading structure for a dental prosthesis carving machine according to claim 5, characterized in that, The upper end of the connector is provided with a connecting thread, and it is connected to the fixture through the connecting thread.

8. The multi-category material loading structure for a dental prosthesis carving machine according to claim 1, characterized in that, The first fixture has a semi-circular mounting groove in the middle and semi-circular fastening plates on both sides. The semi-circular fastening plates are used to lock the round denture material placed in the semi-circular mounting groove.

9. The multi-category material loading structure for a dental prosthesis carving machine according to claim 1, characterized in that, The second fixture has multiple insertion holes on the side away from the base, which are used to install non-disc-shaped denture raw materials.

10. A dental prosthesis carving machine, characterized in that, The dental prosthesis carving machine includes a multi-category material loading structure for a dental prosthesis carving machine as described in any one of claims 1 to 9.

Images